JP2011124067A - Plasma display panel - Google Patents

Abstract

A highly reliable PDP in which impurities such as water and hydrocarbons are sufficiently removed to prevent deterioration of a protective layer and a phosphor.
A front substrate on which a plurality of display electrode pairs, a dielectric layer, and a protective layer are formed, a plurality of data electrodes, a base dielectric layer, a barrier rib, and a phosphor layer are provided. A PDP having a rear substrate 17 formed and having a front substrate 11 and a rear substrate 17 facing each other so that the display electrode pair 14 and the data electrode 18 intersect with each other, and the periphery is sealed. A hydrogen storage material 21 made of a single crystal platinum group element was disposed on the substrate.
[Selection] Figure 2

Description

  The present invention relates to a plasma display panel used for image display.

  In recent years, a plasma display panel (hereinafter abbreviated as “PDP”) has been attracting attention as a color display device capable of realizing a thin and lightweight on a large screen.

  A typical AC surface discharge type PDP as a PDP has a large number of discharge cells formed between a front substrate and a rear substrate which are arranged to face each other. In the front substrate, a plurality of display electrode pairs each consisting of a pair of scan electrodes and sustain electrodes are formed in parallel on a glass substrate, and a dielectric layer and a protective layer are formed so as to cover the display electrode pairs. . The back substrate is formed of a plurality of parallel data electrodes on a glass substrate, a dielectric layer so as to cover them, and a grid-like partition wall formed thereon, respectively, and the surface of the dielectric layer and the side surface of the partition wall And a phosphor layer.

  The front substrate and the rear substrate are arranged opposite to each other so that the display electrode pair and the data electrode intersect with each other and sealed, and a discharge gas is sealed in the internal discharge space. Here, a discharge cell is formed at a portion where the display electrode pair and the data electrode face each other. Ultraviolet light is generated by gas discharge in each discharge cell of the PDP having such a configuration, and phosphors of red, green, and blue colors are excited and emitted by the ultraviolet light to perform color display. As a method of driving the PDP, a subfield method, that is, a method of performing gradation display by combining subfields to emit light after dividing one field period into a plurality of subfields.

  The PDP is manufactured through a front substrate manufacturing process, a back substrate manufacturing process, a sealing process, an exhaust process, and a discharge gas supply process. Here, the sealing step is a step of bonding the front substrate created in the front substrate production step and the rear substrate created in the back substrate production step, and the exhausting step is a step of exhausting gas from the space inside the PDP. In the sealing step, since the front substrate and the rear substrate are bonded together using frit, they are superposed and fired at a temperature equal to or higher than the softening point temperature of the frit, for example, about 440 ° C. to 500 ° C.

In such a sealing process, impure gases such as water (H ₂ O), carbon monoxide (CO), carbon dioxide (CO ₂ ), and hydrocarbon (C _n H _m ) are discharged from the frit. A part of the impure gas is adsorbed inside the PDP. In the subsequent exhaust process, the internal space of the PDP is exhausted. However, it is difficult to completely exhaust the impure gas adsorbed inside the PDP, and a certain amount of impure gas remains inside the PDP.

It is known that the protective layer, the phosphor, and the like react with these impure gases to deteriorate their characteristics. In particular, water (H ₂ O) affects the protective layer, lowers the discharge start voltage of the discharge cells, and causes “bleeding” image quality degradation on the display screen. In addition, when a still image is displayed for a long time, “burn-in” occurs in which the image becomes an afterimage. Further, the hydrocarbon reduces the surface of the phosphor and lowers the emission luminance of the phosphor.

Therefore, it is important to reduce the impurity gas remaining in the inside of the PDP, particularly water and hydrocarbons, stabilize the discharge characteristics, suppress the change over time, and improve the reliability. As methods for removing these impure gases, for example, Patent Document 1 discloses crystalline aluminosilicate (xM ₂ O.yM ₂ O.yAl ₂ O ₃ .zSiO ₂ .nH ₂ O), γ-activated alumina (γ-Al An example is disclosed in which an adsorbent such as ₂ O ₃ ) or amorphous activated silica (SiO ₂ ) is placed inside the PDP to remove water. Patent Document 2 discloses an example in which a magnesium oxide film is provided outside the image display area inside the PDP to remove water.

Further, Patent Document 3 discloses alumina (Al ₂ O ₃ ), yttrium oxide (Y ₂ O ₃ ), lanthanum oxide (La ₂ O ₃ ), magnesium oxide (MgO), nickel oxide (NiO), and manganese oxide (MnO). , Oxides such as chromium oxide (CrO ₂ ), zirconium oxide (ZrO ₂ ), iron oxide (Fe ₂ O ₃ ), barium titanate (BaTiO ₃ ), titanium oxide (TiO ₂ ), and carbonization of these oxides An example in which an adsorbent to which a platinum group element as a hydrogen decomposition catalyst is added is disposed outside the image display area inside the PDP to remove hydrocarbons is disclosed. In Patent Document 4, metal getters such as zircon (Zr), titanium (Ti), vanadium (V), aluminum (Al), and iron (Fe) are provided on the partition inside the PDP to adsorb organic solvent components. An example is disclosed.

JP 2003-303555 A JP-A-5-342991 International Publication No. 2005/086668 JP 2002-531918 A

  However, with the recent increase in screen size and definition of PDPs, the residual amount of impure gas increases. Therefore, in the above conventional example, it is difficult to sufficiently remove impurities such as water, hydrocarbons, and organic solvents, and there is a problem that the protective layer and the phosphor are deteriorated.

  An object of the present invention is to solve these problems and to provide a highly reliable PDP in which impurities such as water and hydrocarbons are sufficiently removed and deterioration of a protective layer and a phosphor is suppressed.

  In order to achieve the above-described object, the PDP of the present invention includes a front substrate on which a plurality of display electrode pairs, a dielectric layer, and a protective layer that are parallel to each other are formed, and a plurality of data electrodes that are parallel to each other and a base dielectric. The PDP has a back substrate on which a layer, a barrier rib, and a phosphor layer are formed, and the front substrate and the back substrate are arranged opposite to each other so that the display electrode pair and the data electrode intersect and sealed. Thus, a hydrogen storage material made of a single crystal platinum group element is disposed inside the PDP.

  According to such a configuration, the hydrogen storage material made of a single crystal platinum group element disposed inside the PDP is not easily oxidized and realizes a stable hydrogen storage performance, and sufficiently removes impurities such as water and hydrocarbons. Thus, a highly reliable PDP in which deterioration of the protective layer and the phosphor is suppressed can be realized.

  Further, the hydrogen storage material may be single crystal palladium. According to such a configuration, palladium has the highest hydrogen occlusion performance among platinum group elements. Therefore, by placing it inside the PDP as a single crystal powder, image quality deterioration such as “smudge” and “burn-in” and fluorescence It is possible to realize a PDP that suppresses a decrease in light emission luminance of the body.

  Further, a hydrogen storage material may be disposed on the surface of the phosphor layer or inside the phosphor layer. According to such a configuration, since the hydrogen storage material is disposed on the phosphor layer itself that adsorbs a large amount of impure gas, the impure gas can be removed more efficiently.

  Further, a hydrogen storage material may be disposed on the surface of the partition wall or inside the partition wall. According to such a configuration, the hydrogen storage material can remove the impure gas without disturbing the emission of visible light.

  Further, a hydrogen storage material may be disposed on the surface of the protective layer. According to such a configuration, since the protective layer is flat, the hydrogen storage material can be arranged uniformly.

  According to the PDP of the present invention, it is possible to provide a highly reliable PDP in which impurities such as water and hydrocarbons are sufficiently removed and deterioration of the protective layer and the phosphor is suppressed.

3 is an exploded perspective view showing a structure of a PDP in Embodiment 1. FIG. It is the sectional view on the AA line of FIG. 3 is a diagram showing an electrode arrangement of the PDP in Embodiment 1. FIG. 6 is a cross-sectional view of a PDP of another example in the first embodiment. FIG. It is a figure which shows the result of a thermogravimetric analysis. 6 is a cross-sectional view of a PDP in a second embodiment. FIG. 6 is a cross-sectional view of a PDP in a third embodiment. FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is an exploded perspective view showing the structure of the PDP in Embodiment 1, and FIG. 2 is a cross-sectional view taken along line AA in FIG. As shown in FIGS. 1 and 2, the PDP 10 includes a front substrate 11 and a back substrate 17.

1 and 2, a plurality of pairs of display electrodes 14 are formed on a glass front substrate 11 in parallel with each other by a scan electrode 12 and a sustain electrode 13. Scan electrode 12 and sustain electrode 13 are formed in a pattern that repeats in the arrangement of scan electrode 12 -sustain electrode 13 -sustain electrode 13 -scan electrode 12. The scanning electrode 12 is formed on a wide transparent electrode 12a made of a conductive metal oxide such as indium tin oxide (ITO), tin oxide (SnO ₂ ), or zinc oxide (ZnO), in order to increase conductivity. A narrow bus electrode 12b containing a metal such as (Ag) is stacked. Similarly, the sustain electrode 13 is formed by laminating a narrow bus electrode 13b on a wide transparent electrode 13a.

Further, a dielectric layer 15 and a protective layer 16 made of magnesium oxide (MgO) are formed so as to cover the display electrode pair 14. The dielectric layer 15 is made of bismuth oxide (Bi ₂ O ₃ ) -based low melting glass or zinc oxide (ZnO) -based low melting glass having a thickness of about 40 μm. The protective layer 16 is a thin film layer made of an alkaline earth oxide mainly composed of magnesium oxide (MgO) having a film thickness of about 0.8 μm. The protective layer 16 protects the dielectric layer 15 from ion sputtering and discharge start voltage, etc. It is provided to stabilize the discharge characteristics.

A plurality of parallel data electrodes 18 made of a highly conductive material mainly composed of silver (Ag) or the like are formed on the glass back substrate 17, and a base dielectric layer is formed so as to cover the data electrodes 18. 19 is formed. The underlying dielectric layer 19 may be bismuth oxide (Bi ₂ O ₃ ) -based low-melting glass similar to that of the dielectric layer 15, but titanium oxide (TiO ₂₎ so as to also serve as a visible light reflecting layer. ) A material in which particles are mixed may be used.

A grid-like barrier rib 22 is formed on the base dielectric layer 19, and phosphor layers 23 that emit red, green, and blue light are formed on the surface of the base dielectric layer 19 and the side surfaces of the barrier rib 22. . The partition wall 22 is formed to a height of about 0.12 mm using, for example, a low-melting glass material. The phosphor layer 23 is about 15 μm using BaMgAl ₁₀ O ₁₇ : Eu as a blue phosphor, Zn ₂ SiO ₄ : Mn as a green phosphor, (Y, Gd) BO ₃ : Eu as a red phosphor, and the like. The film thickness is formed.

  As shown in FIG. 2, a hydrogen storage material 21 made of a single crystal platinum group element having a particle size of 0.1 μm to 20 μm is dispersed and arranged on the surface of the phosphor layer 23. Details of the hydrogen storage material 21 will be described later.

The front substrate 11 and the rear substrate 17 are arranged to face each other so that the display electrode pair 14 and the data electrode 18 cross each other, and the outer peripheral portion thereof is sealed with a sealing material (not shown) such as a frit and discharged inside. A space is formed. A discharge gas containing xenon (Xe) or the like is sealed in the discharge space at a pressure of about 6 × 10 ⁴ Pa. The discharge space is partitioned into a plurality of sections by partition walls 22, and discharge cells 24 are formed at the intersections between the display electrode pairs 14 and the data electrodes 18. These discharge cells 24 discharge and emit light to display an image. The structure of the PDP 10 is not limited to that described above, and the shape of the partition wall 22 may be a stripe shape.

  FIG. 3 is an electrode array diagram of PDP 10 in the first exemplary embodiment. N scanning electrodes Y1, Y2, Y3... Yn (scanning electrode 12 in FIG. 1) and n sustaining electrodes X1, X2, X3... Xn (sustaining electrode 13 in FIG. 1) are long in the row direction. Arranged are m data electrodes A1... Am (data electrodes 18 in FIG. 1) that are long in the column direction. Discharge cells 24 are formed at the intersections of the pair of scan electrodes Y1 and sustain electrodes X1 and one data electrode A1, and m × n discharge cells 24 are formed in the discharge space. Each of these electrodes is connected to a connection terminal provided at a peripheral end portion outside the image display area of the front substrate 11 and the rear substrate 17.

  A general method for driving the PDP 10 is a subfield method, that is, a method in which gradation display is performed by combining one subfield to emit light after dividing one field period into a plurality of subfields. The subfield has an initialization period, an address period, and a sustain period. In the initializing period, initializing discharge is generated in each discharge cell 24 to form wall charges necessary for the subsequent address discharge. In the address period, address discharge is selectively generated in the discharge cells 24 to be displayed, and wall charges necessary for the subsequent sustain discharge are formed. In the sustain period, a sustain pulse is alternately applied to the scan electrode 12 and the sustain electrode 13 to generate a sustain discharge in the discharge cell 24 in which the address discharge has occurred and to cause the phosphor layer 23 of the corresponding discharge cell 24 to emit light. The image is displayed.

  Next, the hydrogen storage material 21 made of a single crystal platinum group element will be described. Conventionally, metal getters and oxide getters have been used to remove water and hydrocarbons, but these impure gases have large molecular diameters, so they do not penetrate well into the getter and limit the amount of impure gas adsorbed. was there.

  By the discharge of the PDP 10, the present inventors decompose impure gases such as water molecules and hydrocarbon molecules released from the protective layer 16, the partition wall 22, the phosphor layer 23, etc. into hydrogen atoms, oxygen atoms, and carbon atoms. I noticed that. Then, focusing on the fact that the platinum group element is a hydrogen storage material that absorbs a large amount of hydrogen, the inventors have found that water and hydrocarbons can be removed by occluding hydrogen atoms in the platinum group element. Furthermore, it has been found that these platinum group elements have a difference in ability to occlude hydrogen due to a difference in crystal state.

  First, the following experiment was conducted using platinum group elements. Powdered hydrogen storage materials 21 made of single crystal platinum group elements such as platinum (Pt), ruthenium (Ru), rhodium (Rh), iridium (Ir), osmium (Os), palladium (Pd), etc. A PDP 10 kneaded with a binder and dispersedly coated on the surface of the phosphor layer 23 as shown in FIG. 2 using a spray method or the like was prepared. As a comparative example, a PDP was prepared in the same manner using a hydrogen storage material 21 made of a polycrystalline platinum group element instead of a single crystal platinum group element.

  Images were displayed using the PDP 10 thus created, and the presence or absence of “bleeding” and “burn-in” on the display surface was visually confirmed for about 1000 hours. As a result, it was confirmed that the image quality deterioration due to “smudge” and “burn-in” was reduced in all PDPs 10 compared to the conventional PDP 10.

  Of the platinum group elements, palladium was the most effective. This is thought to be because palladium has the ability to absorb the hydrogen atoms generated by the decomposition of water molecules and hydrocarbon molecules. It was also found that even a hydrogen storage material composed of the same platinum group element has a greater effect when a single crystal platinum group element is used than a polycrystalline platinum group element.

  The reason is considered as follows. The polycrystalline platinum group element is oxidized by heat treatment such as firing or sealing in the manufacturing process of the PDP 10, and the hydrogen storage performance is lowered. On the other hand, since the single crystal platinum group element is less oxidized by heat treatment, the decrease in the hydrogen storage capacity is small, and the hydrogen storage capacity of the platinum group element can be maximized.

  In order to support this, thermogravimetric analysis (TGA) was performed on polycrystalline palladium and single crystal palladium having the same particle diameter and specific surface area. FIG. 5 is a graph showing the results of thermogravimetric analysis, in which the horizontal axis indicates the heating temperature and the vertical axis indicates the weight increase due to oxidation. In the heating temperature range of 400 ° C. to 600 ° C. used for firing and sealing the PDP 10, single crystal palladium can suppress oxidation due to heating.

  When a PDP 10 using single crystal palladium was made for the hydrogen storage material 21 and an evaluation experiment was conducted for 1000 hours, image quality deterioration such as “smudge” and “burn-in” and almost no decrease in emission luminance of the phosphor occurred. I was able to confirm that. As is clear from these experiments, when the hydrogen storage material 21 made of a single crystal platinum group element was disposed on the surface of the phosphor layer 23, the single crystal platinum group element that was not oxidized was decomposed along with the discharge. Water molecules and hydrocarbon molecules can be greatly reduced in order to stably store hydrogen sufficiently. Thereby, deterioration of the protective layer 16 and phosphor can be suppressed. As a result, it is possible to suppress changes with time in discharge characteristics and luminance.

  FIG. 4 shows a cross-sectional view of the PDP 10 of another example in the first embodiment, in which hydrogen storage materials 21 made of single crystal platinum group elements are dispersedly arranged in the phosphor layer 23. The phosphor layer 23 is formed by spraying or the like using a material obtained by kneading the powder of the hydrogen storage material 21 in the phosphor material. As a result, the hydrogen storage material 21 can be dispersed inside the phosphor layer 23. The particle size of the hydrogen storage material 21 is desirably 0.1 μm to 20 μm, and the mixing ratio thereof is desirably about 0.01 wt% to 2 wt% with respect to the phosphor powder. The phosphor layer 23 has a low phosphor filling rate of 60% or less. Therefore, even if the hydrogen storage material 21 is dispersed in the phosphor layer 23, the effect of storing hydrogen is maintained.

  As a comparative example, a PDP 10 was prepared in the same manner using a hydrogen storage material made of a polycrystalline platinum group element instead of a single crystal platinum group element. These images were similarly displayed for 1000 hours to confirm the deterioration of the image quality. As a result, it was confirmed that the PDP 10 using the hydrogen storage material 21 made of a single crystal platinum group element suppresses image quality deterioration more than the PDP 10 using a hydrogen storage material made of a polycrystalline platinum group element. Further, when single crystal palladium is used for the hydrogen storage material 21, the suppression effect is particularly great, and it has been confirmed that there is almost no deterioration in image quality such as “smudge” or “burn-in” or a decrease in the emission luminance of the phosphor. .

  As is clear from these experiments, even when the hydrogen storage material 21 made of a single crystal platinum group element is disposed not inside the surface of the phosphor layer 23 but stably inside the phosphor layer 23, the hydrogen decomposed by the discharge is stably stored. Therefore, water molecules and hydrocarbon molecules can be greatly reduced. Thereby, deterioration of the protective layer 16 and phosphor can be suppressed. As a result, it is possible to suppress changes with time in discharge characteristics and luminance.

  As described above, according to the configuration in the first embodiment, the hydrogen storage material 21 made of a single crystal platinum group element is arranged on the phosphor layer 23 in which a large amount of impure gas is adsorbed, so that the impure gas can be further reduced. It can be removed efficiently.

(Embodiment 2)
FIG. 6 is a cross-sectional view of PDP 10 in the second embodiment. In FIG. 6, the same components as those in FIG. The second embodiment is different from the first embodiment in the configuration in which the hydrogen storage material 21 made of a single crystal platinum group element is dispersed on the surface or inside of the phosphor layer 23 in the first embodiment. On the other hand, the second embodiment is configured such that the hydrogen storage material 21 made of a single crystal platinum group element is dispersed and arranged on the surface or inside of the partition wall 22. FIG. 6 shows a state in which the hydrogen storage material 21 made of a single crystal platinum group element is disposed on the top surface of the partition wall 22.

  The particle size of the powder of the hydrogen storage material 21 made of a single crystal platinum group element used in the second embodiment must be such that no large gap is generated between the partition wall 22 and the protective layer 16. 0.1 μm to 5 μm is desirable. Further, the thickness of the hydrogen storage material 21 layer made of a single crystal platinum group element is preferably 5 μm or less, and the hydrogen storage material 21 made of a single crystal platinum group element may be scattered on the top of the partition wall 22.

  As in the first embodiment, a hydrogen storage material made of a single crystal platinum group element such as platinum (Pt), ruthenium (Ru), rhodium (Rh), iridium (Ir), osmium (Os), palladium (Pd), etc. 21 was pulverized and each was kneaded with an organic binder, and applied to the top of the partition wall 22 using a printing method, a spray method, a photolithography method, a dispenser method, an inkjet method, or the like. Further, as a comparative example, a hydrogen occlusion material made of a polycrystalline platinum group element was used instead of the single crystal platinum group element, and applied to the partition wall 22 in the same manner.

  An evaluation experiment similar to that of the first embodiment was performed using these PDPs 10. As a result, it was confirmed that the PDP 10 using the hydrogen storage material 21 made of a single crystal platinum group element suppresses image quality deterioration more than the PDP 10 using a hydrogen storage material made of a polycrystalline platinum group element. Further, when single crystal palladium is used for the hydrogen storage material 21, the suppression effect is particularly great, and it has been confirmed that there is almost no deterioration in image quality such as “smudge” or “burn-in” or a decrease in the emission luminance of the phosphor. . In addition, the same result could be obtained even in the configuration (not shown) in which the hydrogen storage material 21 made of single crystal palladium is disposed inside the partition wall 22.

  As is clear from these experiments, when the hydrogen storage material 21 made of a single crystal platinum group element such as single crystal palladium is disposed on the surface or inside of the partition wall 22, hydrogen decomposed due to discharge is sufficiently stabilized. Occlude. Therefore, water molecules and hydrocarbon molecules can be greatly reduced, discharge characteristics can be stabilized, and changes with time can be suppressed.

  Further, in the second embodiment, since the hydrogen storage material 21 made of a single crystal platinum group element is arranged in the partition wall 22 not related to light emission, the visible light transmission is not hindered and the light emission amount of the PDP 10 is affected. There is also an effect that the impure gas can be removed without affecting.

(Embodiment 3)
FIG. 7 is a cross-sectional view of PDP 10 in the third embodiment. In FIG. 7, the same components as those in FIG. The third embodiment is different from the first embodiment in that the hydrogen storage material 21 made of a single crystal platinum group element is dispersed on the surface of the protective layer 16 in the third embodiment. Also in the third embodiment, the particle size of the hydrogen storage material 21 made of a single crystal platinum group element must be such that a large gap is not generated between the partition wall 22 and the protective layer 16, and is 0.1 μm to 5 μm is desirable. Further, the coverage of the hydrogen storage material 21 made of the single crystal platinum group element covering the protective layer 16 is 50% or less so that the hydrogen storage material 21 made of the single crystal platinum group element does not hinder the transmission of visible light. It is desirable.

  As in Embodiment Mode 1, single crystal powder using platinum group elements such as platinum (Pt), ruthenium (Ru), rhodium (Rh), iridium (Ir), osmium (Os), palladium (Pd), etc. It was created. Each of these hydrogen storage materials 21 made of single crystal platinum group elements was kneaded with an organic binder, and applied to the surface of the protective layer 16 using a printing method, a spray method, a photolithography method, a dispenser method, an ink jet method, or the like. As a comparative example, a PDP 10 was prepared in the same manner using a hydrogen storage material made of a polycrystalline platinum group element instead of a single crystal platinum group element.

  An evaluation experiment similar to that of the first embodiment was performed using the PDP 10 thus created. As a result, it was confirmed that the PDP 10 using the hydrogen storage material 21 made of a single crystal platinum group element suppresses image quality deterioration more than the PDP 10 using a hydrogen storage material made of a polycrystalline platinum group element. Further, when single crystal palladium is used for the hydrogen storage material 21, the suppression effect is particularly great, and it has been confirmed that there is almost no deterioration in image quality such as “smudge” or “burn-in” or a decrease in the emission luminance of the phosphor. .

  As is clear from these experiments, when the hydrogen storage material 21 made of a single crystal platinum group element such as single crystal palladium is disposed on the surface of the protective layer 16, the hydrogen decomposed by the discharge is stored. Therefore, water molecules and hydrocarbon molecules can be greatly reduced, discharge characteristics can be stabilized, and changes with time can be suppressed. Furthermore, in Embodiment 3, since the protective layer 16 is flat, it is easy to apply the hydrogen storage material 21 uniformly, which is suitable for a large screen or a high-definition PDP.

  As described above, according to the PDP of the present invention, the hydrogen storage material made of a single crystal platinum group element disposed inside the PDP is hardly oxidized and has a stable hydrogen storage capability. Therefore, it is possible to realize a highly reliable PDP in which impure gases such as water and hydrocarbons are sufficiently removed and deterioration of the protective layer and the phosphor is suppressed.

  According to the PDP of the present invention, impurities such as water and hydrocarbons can be sufficiently removed, and deterioration of the protective layer and the phosphor can be suppressed, so that it is useful as a highly reliable PDP.

10 PDP
DESCRIPTION OF SYMBOLS 11 Front substrate 12 Scan electrode 12a, 13a Transparent electrode 12b, 13b Bus electrode 13 Sustain electrode 14 Display electrode pair 15 Dielectric layer 16 Protective layer 17 Back substrate 18 Data electrode 19 Base dielectric layer 21 Hydrogen storage material 22 Partition wall 23 Fluorescence Body layer 24 discharge cells

Claims (5)

A front substrate on which a plurality of display electrode pairs parallel to each other, a dielectric layer, and a protective layer are formed; a back substrate on which a plurality of data electrodes, a base dielectric layer, barrier ribs, and a phosphor layer are formed in parallel to each other; A plasma display panel in which the front substrate and the rear substrate are arranged to face each other so that the display electrode pair and the data electrode intersect with each other, and the periphery is sealed. A plasma display panel comprising a hydrogen storage material comprising a crystalline platinum group element. The plasma display panel according to claim 1, wherein the hydrogen storage material is single crystal palladium. The plasma display panel according to claim 1, wherein the hydrogen storage material is disposed on a surface of the phosphor layer or inside the phosphor layer. The plasma display panel according to claim 1, wherein the hydrogen storage material is disposed on a surface of the partition wall or inside the partition wall. The plasma display panel according to claim 1, wherein the hydrogen storage material is disposed on a surface of the protective layer.

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